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The phenomenon and solution of the solder wire bursting during the welding process
Sep 13, 2022
09-13
2022
When the solder wire is welded, the tin wire is filled with rosin. When the temperature of the soldering iron is high, the molten solder wraps the rosin, and the rosin inside is rapidly vaporized at high temperature, and the wrapped solder is washed away, resulting in a popping sound. At the same time, some brightly colored small tin bead solid metal will pop up, which is the phenomenon of fried tin.
Poor analysis of solder joint position bridges when soldering with solder paste
Sep 13, 2022
09-13
2022
There are various reasons for the short circuit between the solder joints of the circuit board formed during the soldering process with solder paste, which can be mainly divided into three categories: one is the reason of the solder paste itself; the other is the reason of the incoming circuit board ; The third is the influence of welding process. Solder paste manufacturers can analyze the reasons for these defects one by one:
How to distinguish between no-clean and water-wash solder paste
Sep 13, 2022
09-13
2022
1. the use of solder paste is different
The biggest feature of no-clean solder paste is that it can be free from cleaning. After the circuit board is soldered with no-clean solder paste, it can proceed to the next step of testing and assembly without cleaning. After SMT manufacturers use solder paste for soldering, the surface of the circuit board is relatively clean, and the volatilized residue after the solder paste is melted is relatively small. The circuit board can pass the inspection of various electrical
How to use eco-friendly tin bars
Sep 09, 2022
09-09
2022
With the increasing awareness of environmental protection, the solder in the electronic manufacturing industry is also required to be environmentally friendly. Therefore, environmentally friendly tin bars have begun to replace traditional leaded tin bars. The price of environmentally friendly tin bars is higher. From the perspective of cost saving, waste environmentally friendly tin bars need to be recycled.
Lead-free solder bar, wire, balls knowledge
Sep 09, 2022
09-09
2022
Tin/Lead-based solder is the most commonly used solder in electronics assembly, but in the last year there has been a push across the industry to switch to lead-free solder bar. The rationale is that there is a growing understanding of lead use and its adverse effects on human health.
Health hazards associated with lead include neurological and reproductive disorders, and neurological and physical developmental delays. Lead poisoning is particularly harmful to the neurodevelopment of young children.
Soldering process related materials and common sense
Sep 09, 2022
09-09
2022
1 Definition of solder: the use of heating tools (electric ferrochrome) to firmly join two or more point metal conductors to achieve the purpose of conducting electricity.
make process.
2 Common sense of solder: There are generally two types of solder commonly used in toy assembly:
A. Tin bar: It is used on the wave crest passing tin machine specially used for electronic pulling, which will not be introduced here.
B. Tin wire:
a Composition: 60% tin, 40% lead, the hollow part of the tin wire contains flux.
b. Features: The melting temperature of the tin wire is above 190 C, and the conductivity is good.
The important role of adding surfactants in solder paste
Sep 09, 2022
09-09
2022
Surfactants are very common in our production and life, such as our common styrofoam, the foam used for shaving, and also in detergents. It is added in the industry, and it also exists in personal care products. Of course, this substance is also necessary in lead-free solder paste. Because the surface tension of the metal to be soldered needs to be improved, the solder paste manufacturer adds a small amount of active agent. It can make the product have good moisturizing performance and speed up the welding process. Surfactants are composed of two ions with completely opposite physical properties.
Solder Wire Solder Wire Solder Bar Tin Bar Tin Wire Various Uses
Sep 08, 2022
09-08
2022
The production and maintenance process of electronics, hardware, clocks, toys, accessories and other industries are inseparable from soldering, so lead-free tin bar soldering materials are indispensable in these jobs. The melting point of solder varies with the ratio of tin to lead, and the melting point of tin-lead alloys is lower than that of any other alloy. High-quality solder has a tin-lead ratio of 63% tin and 37% lead. The melting point of this proportion of solder is 183°C. Some poor-quality solders have higher melting points, and the solder joints are rough and slag-like after solidification, which is due to the high lead content in the solder.
Soldering innovation of solder wire, tin bar and solder paste
Sep 08, 2022
09-08
2022
Solder wire, tin bar, solder paste welding material, electronic products are produced. Because the melting point of copper is 1085C, the melting point of solder wire, tin bar, and solder paste is 2353C, or even lower. As long as it is assisted by solder wire, tin bar, and solder paste, it can reduce more than 800 degrees, which significantly reduces production costs and technical barriers.
Solder paste quality inspection steps
Sep 08, 2022
09-08
2022
1. For solder powder detection, the particle size of tin powder can be measured with a high magnification microscope to check the distribution of tin powder particles. It is relatively high, which proves that the quality of this solder paste solder powder is relatively good, and it will not affect the quality of SMD printing on the stencil.
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